Ball-press.



S. S. EVELAND.

BALLPRESS. APPLICATION FILED D110. 31, 1908.

996,573, Patented June 27, 1911.

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S.S.EVELAND. BALL PRESS.

APPLICATION FILED DEO. 31, 1908.

Patentd June 27, 1911.

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Patented JllIlG 27, 1911.

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BALL PRESS.

ARPLIGATION FILED DEC. 31, 1908.

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lengths off of Application filed December 31, 1908.

Specification of Letters Patent.

Patented June 27, 1911. Serial No. 476,199.

To all whom it may concern:

Be it known that I, SAMUEL S. EVELAND, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have inventeda certain new and useful Ball-Press, of which the following is a specification.

The principal object of the present invention is to provide a simple, reliable and comparatively inexpensive machine for pressing cylindrical or like blanks into spherical form for the purpose of making balls.

To this and other ends hereinafter set forth the invention comprises the improve ments to be presently described and finally claimed.

In the drawings, Figure 1, is a side view partly in section of a machine embodying features of the invention. Fig. 2, is a front view of the upper portion of the machine. Fig. 3, is a plan view of the table and the mechanism thereof. Fig. 4, is an enlarged sectional view of the lower press die. Fig. 5, is an enlarged sectional elevation showing the feed and the transfer arm. Fig. 6, is a detail plan view of the same, and Figs. 7 and 8, are detail views of the dies.

1, is a funnel shaped hopper mounted so as to reciprocate vertically on a tube 2, held in a bracket 2 rising from the table of the machine, the top of the tube 2 being sul stantially flush with the bottom of the hopper when the latter is in its lowest position. Beneath the outlet of the tube 2 is arranged one of the notches 3, formed in the edge of a part 4. By loosening the screw 5, it is pos sible to turn the part 4 around and again secure it to place, thus bringing any oneof its notches into alinement with the discharge end of the tube 2. This may be done to compensate for wear or for any other purpose. There is a transfer arm 7, bifurcated or split at its free end, so as to provide spring fingers between which the blanks are taken one at a time from the part 3, and carried and delivered to the press mechanism, hereafter described. These blanks a, are short cylindrical slugs and may be made by cutting wire, a quantity of which are placed in the hopper 1 at the beginning of the operation. The transfer arm 7 is fast on a stud 8, pivotally mounted in a claw 9 carried by a carriage 10, adapted to be reciprocated in ways on the table of the machine. There is a rack 11, fast to the table of the machine and a pinion 12 meshes with the teeth of this rack and has frictional engagement with the stud 8 which carries the transfer arm. The nut 13 affords convenient means for establishing this frictional engagement. The stud 8, is provided at its lower end with a stop arm 14, having a downward projection that cooperates with a fixed rail or bar 15. The arm 14, projects from the stud diametrically opposite to the transfer arm. As the carriage 10 is reciprocated toward the right the pinion 12 meshes of the rack 11 and travels along the same so that by the frictional contact between the pinion and the stud 8, the transfer arm 7 is turned; its path being in cheated by dotted lines in Fig. 6. However, this turning motion brings the projection 14 of the arm 14 into contact with the rail or bar 15, thus the further turning motion of the transfer arm 7 is arrested and as the carriage continues to move toward the right the transfer arm proceeds in a straight line, the pinion 12 still turning but slipping in respect to the stud. The fingers of the transfer arm seize a blank from the part 4. To insure rectilinear motion of the transfer arm 7, a fixed part 16 is provided between the face of which and the rail or bar 15, the projection 14 enters and slides as between ways. In the reverse motion of the carriage this part 16, operates to cause the arm 7 to retract in a straight line before turning in a circle. The continued motion of the carriage toward the left swings the arm 7 around and causes it to proceed in a straight line so as to place the blank, which it carries, between the pressing dies 18 and 19. These dies come together and compress the blank as shown in Figs. 7 and 8, but as soon as they have engaged the blank, the transfer arm 7 retracts in a straight line and then turns back to grasp another blank.

The carriage is shown as reciprocated by means of a centrally pivoted link 20 which is operated by a cam 21 on the driving shaft 22. This link is provided with arms 23, which support the movable part of the hopper so as to reciprocate it vertically. The link 20 is not pivoted directly to the carriage but to an arm 24 which engages the carriage in such manner as to be capable of slipping out of engagement with the carriage if the parts get out of time or other accident occur. As shown the arm 24 is spring pressed at one end to the table at the other end to a spring cushioned rod 30. The purpose of this is that the dies may hold the blank while the transfer arm 7 die 18 is mounted in a die holder 32 between the parts for firmly, yet yieldingly, it is being freed from The upper 31 with a spring much the same purpose nection 30 is provided. mounted in a slide 34; in

chine and is reciprocated by an eccentric rod 35, operated by an eccentric on the shaft 22.

3G, is a sprmg finger of the machine and nor of the notch in the it while the blanks are for grasping a blank.

What I claim is:

1. In a machine of the type recited the combinatlon of pressing dies, feed mechaan arm havmg a spllt transfer portion nism,

and a stop portion, a reciprocatory carriage to which the middle portion of said arm is pivoted, a rack, a pinion rack and frictionally connected with said arm for turning it, and part with which the stop arm cooperates to insur thereof at the ends of its travel and when in proximity with the d nism, substantially combination of a fixed edge a notch,

and

adapted to collide with said finger and turn Copies of this patent may b part 4:, so as to close being delivered, but this finger is knocked out of the way by the transfer arm 7, when it goes into as described. 2. In a machine of the type recited the means for feeding blanks to said notch, a plvotal spring finger adapted it aside so as to reach a blank, substantially as described.

3. In a machine of the type recited the combination of pressing dies, feed mechanism, a reciprocating carriage, a transfer arm carried by the carriage, devices for controlling the movements of said arm, a link, a spring pivot for detachably connecting one end of the link to said carriage so that the pin frees the link if the carriage sticks, an operating'lever connected to the other end of the link, and a spring connected with the link for holding the same clear of the carriage when disconnected therefrom, substantially as described.

The spring arranged endwlse link 29, pivoted the machine and combination of a member notched for the reception of blanks, blanks vertically to the notch of said member, vertically reciprocating presser dies having ejector-s, a carriage arranged for reciprocation horizontally between said member and dies, at bifurcated transfer arm pivoted to said carriage and adapted to turn about a vertical axis, a rack-and-pinion having frictional engagement with said arm for turning it, and guides for imparting to said arm rectilinear motion in the direction of its length and at the ends of its travel, substantially as described.

5. In a machine of the type recited the combination of a member having a margi nal notch, means for feeding blanks to said notch, a spring finger normally overlying the notch to close it, a pair of spring supported pressing dies, a bifurcated carrying arm adapted to push sald finger aside and grasp a blank and deposit it between the spring dies, and means includinga reciproeating carriage and a rack-and-pinion and guides for operating said arm, substantially as described.

In testimony whereof I signed my name.

SAMUEL S. EVELAND. V

as the spring con- A die holder 33 is the head of the mapivoted to the table mally held in front posltion meshing with said a rail and a fixed portion of the e rectilinear motion ies and feed mechahave hereunto part havlng 1n 1ts Witnesses S. E. PATTERSON, FRANK E. FRENCH.

a split transfer arm e obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

a hopper for feeding 

